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-rw-r--r--Doc/c-api/import.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index 6de3fb0..1f6b1e8 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -178,7 +178,8 @@ Importing Modules
.. c:function:: const char * PyImport_GetMagicTag()
Return the magic tag string for :pep:`3147` format Python bytecode file
- names.
+ names. Keep in mind that the value at ``sys.implementation.cache_tag`` is
+ authoritative and should be used instead of this function.
.. versionadded:: 3.2